Do sister chromatids have the same DNA sequence?

The DNA sequence of two sister chromatids is completely identical (apart from very rare DNA copying errors). Sister chromatid exchange (SCE) is the exchange of genetic information between two sister chromatids. SCEs can occur during mitosis or meiosis.

Do sister chromatids have identical DNA?

The sister chromatids are identical to one another and are attached to each other by proteins called cohesins. The attachment between sister chromatids is tightest at the centromere, a region of DNA that is important for their separation during later stages of cell division.

Are sister chromatids identical in DNA sequence in G2?

In G2, after DNA replication in S phase, as cell enter mitotic prophase, each chromosome consists of a pair of identical sister chromatids, where each chromatid contains a linear DNA molecule that is identical to the joined sister. The sister chromatids are joined at their centromeres, as shown in the image below.

Do sister chromatids separate during meiosis?

Meiosis II is the second division of meiosis. It occurs in both of the newly formed daughter cells simultaneously. Meiosis II is similar to Mitosis in that the sister chromatids are separated.

What color should the sister chromatids be for each pair?

Duplicate the chromosome for DNA duplication (S synthesis)  What color should the sister chromatids be for each pair? Yellow and red 4.

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What happens if both sister chromatids move to the same pole?

The first round of chromosome segregation (meiosis I) is unique in that sister chromatids move together to the same spindle pole while homologous chromosomes move apart from each other to the opposite poles. … This leads to the formation of chiasmata, which maintain homolog association until the onset of anaphase I.

Which DNA is hardest to separate?

The sequence in part A would be more difficult to separate because it has a higher percentage of GC base pairs compared to the one in part B. GC base pairs have three hydrogen bonds compared with AT base pairs, which only have two hydrogen bonds.

Why must DNA replicate before a cell divides?

In order for all of the cells in your body to maintain a full genome, each cell must replicate its DNA before it divides so that a full genome can be allotted to each of its offspring cells. If DNA replication did not take place fully, or at all, the offspring cells would be missing some or all of the genome.

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